C++文件的操作

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#include<stdio.h>#include<string.h>#include<stdlib.h>#include<iostream>#include<algorithm>#include<fstream>using namespace std;int main()///对ASCLL文件的操作{    int a[10];    ofstream outfile("f1.dat",ios::out);    if(!outfile)    {        cout<<"open is error"<<endl;        exit(0);    }    for(int i = 0; i < 10; i++)    {        cin>>a[i];        outfile<<a[i]<<" ";    }    outfile.close();    ifstream infile("f1.dat",ios::in);    if(!infile)    {        cout<<"open is error"<<endl;        exit(0);    }    for(int i = 0; i < 10; i++)    {        int b;        infile>>b;        cout<<b<<" ";    }    cout<<endl;    infile.close();    return 0;}

#include<stdio.h>#include<string.h>#include<stdlib.h>#include<iostream>#include<algorithm>#include<fstream>using namespace std;struct student{    char name[20];    int num;    int age;    char sex;};int main()///对二进制文件的操作{    struct student stu[3] = {"Li",1001,18,'f',"Fan",1002,19,'m',"Wang",1004,17,'f'};    cout<<stu[0].name<<endl;    ofstream outfile("stu.dat",ios::binary);    if(!outfile)    {        cerr<<"open error!"<<endl;        abort();  ///退出程序 = exit    }    for(int i = 0; i < 3; i++)        outfile.write((char *)&stu[i],sizeof(stu[i]));///char*--强制类型转换    outfile.close();    ifstream infile("stu.dat",ios::binary);    if(!infile)    {        cerr<<"open error!"<<endl;        exit(0);    }    student x;    infile.read((char *)&x,sizeof(student));    infile.close();    cout<<"name: "<<x.name<<endl;    return 0;}

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